公开(公告)号：JPH07150977A

公开(公告)日：1995-06-13

申请号：JP21266194

申请日：1994-09-06

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  YOUUPIN CHIYOU ,  HANSU URURITSUHI FURUUCHI ,  KURISUTEIAN GENEETO ,  PIITAA KANBAA ,  ANDERUSU RINDOBUARU ,  PEETAA RUFURI ,  TOOMASU ZATSUTERUMAIYAA ,  PEETAA ZENIOORU

IPC: F02C9/00 ,  F02C6/00 ,  F02C6/02 ,  F02C9/28 ,  F02C9/34

Abstract: PURPOSE: To perform a partial load operation by reducing a fuel quantity in a second combustion chamber to zero, maintaining the outlet temperature of a first turbine almost constant, and maintaining a fuel quantity in a first combustion chamber almost constant during the reduction of the fuel quantity in the second combustion chamber so as to maintain the inlet temperature of the first turbine almost constant. CONSTITUTION: A gas turbine compresses sucked air 2 in a compressor 1, and the compressed air 3 flows into a high-pressure combustion chamber 4. A high-pressure turbine 5 is operated downstream of the high-pressure combustion chamber 4, heated gas 6 is partially expanded and exhaust gas 7 is discharged. The exhaust gas ignites fuel in a low-pressure combustion chamber 8. At this time, a fuel quantity 9 in the low-pressure combustion chamber 8 is reduced to zero, and the outlet temperature of the high-pressure turbine 5 is maintained approximately constant. In addition, a fuel quantity 4a in the high-pressure combustion chamber 4 is maintained approximately constant during the reduction of the fuel quantity 9 in the low-pressure combustion chamber 8, and the inlet temperature of the high-pressure turbine 5 is maintained constant. Thus, the low-pressure combustion chamber 8 performs a partial load operation up to 40% of the high-pressure combustion chamber 4.